OneKey

OneKey is an open-source cryptocurrency wallet ecosystem founded in 2020 that spans hardware cold storage devices and multi-platform software applications. The project's stated mission is to deliver self-custodial access to on-chain assets through fully auditable, reproducible code — positioning itself against closed-source wallets by publishing firmware, app source, and hardware schematics on GitHub under the onekeyhq organization.

Core Mechanism

OneKey separates private key storage from internet-connected software by keeping keys inside a dedicated secure element on its hardware devices while exposing a unified interface across mobile, desktop, and browser. The software wallet communicates with hardware via Bluetooth or USB, or operates as a fully standalone hot wallet when no hardware device is connected. All transaction signing happens in the secure enclave of the hardware or within the software's local key store — private keys never touch external servers.

The Sign Guard system sits between the user and the blockchain: before a transaction or contract interaction is approved, OneKey decodes and previews what will happen, flags suspicious tokens, and blocks known phishing dApps. This is distinct from simple address verification — it performs on-chain simulation to show the expected outcome before the user confirms.

Product Lineup

Hardware wallets form the premium tier:

• OneKey Pro — the flagship device with a color touchscreen and Bluetooth connectivity, aimed at active DeFi users who carry hardware but still interact with dApps daily.
• OneKey Classic 1S — credit-card-sized at 20 grams with Bluetooth and NFT support, uses an EAL6+ certified secure element alongside a separate MCU. The EAL6+ rating matches the security standard used in government passports and bank cards.
• OneKey Classic 1S Pure — a Bitcoin-only variant for users who want minimal attack surface.
• OneKey Lite — a simplified backup and seed storage card for users who want redundancy without a second full device.
• OneKey KeyTag — a physical metal tag for durable seed phrase backup.

Software applications run on iOS, Android, macOS, Windows, Linux, as a browser extension, and as a web app. Users can pick whichever interface fits their workflow and switch between them with the same underlying account.

A concierge tier called OneKey Sifu offers expert-assisted wallet setup for users who want guided onboarding to hardware self-custody.

Solana Support

OneKey supports Solana across both its hardware and software product lines. The Solana integration covers SOL storage, sending, and receiving, along with SPL token management, NFT display and transfer, and access to Solana DeFi applications directly from the app. The OneKey Classic 1S and Pro hardware devices support SOL message signing, enabling users to authenticate with Solana dApps while keeping keys cold — a capability that was specifically upgraded and announced as a hardware firmware enhancement.

For DeFi, users connect to Solana protocols through the wallet's built-in browser. Third-party integrations confirmed to work with OneKey on Solana include Jupiter (the dominant Solana DEX aggregator), Solflare, and Backpack. This means a OneKey hardware device can serve as the signing key while Solflare or Backpack acts as the front-end interface for staking and swaps.

OneKey also integrates private swaps powered by Houdini directly in the app, enabling cross-chain transactions without wallet correlation. As of mid-2026, OneKey users had moved over $1.3 million through Houdini private swap orders built into the app.

Key Features

• 100+ chains, 30,000+ tokens — broad multi-chain coverage means a single device and app serves Bitcoin, Ethereum, Solana, BNB Chain, XRP, TRON, Aptos, and dozens of others from one interface.
• Gas sponsorship — a fee-free transfer and trading feature launched in July 2026, abstracting gas costs for eligible transactions.
• Perpetuals and all-asset trading — OneKey's in-app trading expanded in 2026 to cover crypto perpetuals, precious metals, forex, and pre-IPO positions.
• USDT earn — in-app DeFi yield on USDT through integrations such as Bitway (showing 7.5% APY as of August 2026).
• Auto-wipe on tamper — hardware devices wipe data after repeated PIN failures or if firmware tampering is detected.
• MetaMask Air-Gap support — hardware can connect to MetaMask in air-gap mode for EVM transactions without a USB or Bluetooth dependency.
• Migration tools — import flows from MetaMask, Phantom, and other wallets to lower the switching cost for users moving to OneKey.

Security and Audits

OneKey holds ISO/IEC 27001 certification for its information security management practices. The hardware line carries EU NB Certification under EN 18031. Firmware and app code have been audited by SlowMist, a blockchain-focused security firm. Firmware builds are reproducible, meaning independent auditors can verify that compiled binaries match the published source code — a strong open-source guarantee that most hardware wallet competitors do not offer.

Funding and Team

OneKey raised a Series B at a $150 million valuation, led by YZi Labs (formerly Binance Labs), announced in June 2026. Earlier backing came from Coinbase Ventures, Dragonfly Capital, and Ribbit Capital — a combination of exchange-affiliated strategic investors and crypto-native venture firms. The founding date on record is September 2020, placing the project's origins in the early period of the DeFi expansion when demand for self-custody hardware started to broaden beyond Bitcoin maximalists.

Ecosystem Fit

On Solana specifically, OneKey fills the hardware wallet gap that Phantom and other browser-extension wallets leave open. Phantom and Backpack are software-only solutions; connecting them to a OneKey hardware device adds a cold-storage signing layer without abandoning the familiar interface. For Solana users who hold meaningful positions in SOL, liquid staking tokens, or DeFi positions and want hardware-level key protection, OneKey is one of a small set of hardware wallet options that explicitly supports Solana message signing and DeFi interaction — alongside Ledger.

The fully open-source posture differentiates OneKey from Ledger (partially closed firmware) and Trezor (open-source but lacking EAL6+ secure element). The combination of open source plus EAL6+ plus multi-platform software gives OneKey a distinct position: targeting users who want institutional-grade key security without giving up daily DeFi usability on any chain, including Solana.